Despite Solr's many capabilities the product does not include the
ability to perform semantic search in your files. For example, it does
not let you perform queries or reasoning over the objects that are
discovered in a document via Entity Extraction. For that you need to
marry Solr with an RDF Database to create intelligent text
documents. Several of our SemTech customer projects have found this
augmentation of Solr with RDF to be a key feature for creating unique
capabilities within their product offering.

In our webcast we'll show you some demos of applications that use
Solr and an RDF Database to reason over text objects. We'll also
provide a short tutorial on how to keep Solr in sync with the RDF
Database.